TINGTING YAN (Department of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) LILI TAN (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) DANGSHENG XIONG () (Department of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China) BINGCHUN ZHANG (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) KE YANG (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China)
Abstract
A manganese oxide contained coating was prepared on biodegradable AZ31B magnesium alloy to control the degradation of AZ31B and improve its biocompatibility. Morphology, composition, and corrosion resistance of the coating were studied. The SEM observations showed that the coating was approximately 4â6 μm in thickness with net-like microcracks. The XPS analysis indicated that the coating was mainly composed of MgO, Mg(OH)2, MnO2, Mn2O3, and Mn3O4. It was found that AZ31B with such coating showed better corrosion resistance in simulated blood plasma through electrochemical and immersion tests. The hemolytic assay indicated that the treated AZ31B had no hemolytic effect.
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Article provided by World Scientific Publishing Co. Pte. Ltd. in its journal Surface Review and Letters.